379434866788921 has 2 divisors, whose sum is σ = 379434866788922. Its totient is φ = 379434866788920.

The previous prime is 379434866788909. The next prime is 379434866788927. The reversal of 379434866788921 is 129887668434973.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298412185201321 + 81022681587600 = 17274611^2 + 9001260^2 .

It is a cyclic number.

It is not a de Polignac number, because 379434866788921 - 2¹³ = 379434866780729 is a prime.

It is not a weakly prime, because it can be changed into another prime (379434866788927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189717433394460 + 189717433394461.

It is an arithmetic number, because the mean of its divisors is an integer number (189717433394461).

Almost surely, 2^{379434866788921} is an apocalyptic number.

It is an amenable number.

379434866788921 is a deficient number, since it is larger than the sum of its proper divisors (1).

379434866788921 is an equidigital number, since it uses as much as digits as its factorization.

379434866788921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21069103104, while the sum is 85.

The spelling of 379434866788921 in words is "three hundred seventy-nine trillion, four hundred thirty-four billion, eight hundred sixty-six million, seven hundred eighty-eight thousand, nine hundred twenty-one".